What Is a Subcutaneous Injection? medicalweightlosscentersofamerica.com Subcutaneous Injection: What It Is and How to Give One Not All Shots Are Created Equal Your Quick Guide to Injection Types Ever wondered why some shots go in your arm muscle and others just under the skin? Here's the breakdown: Injection Techniques Step by Step Guide 1. Intramuscular Injection (IM) 90 Angle Needle Position: Perpendicular to the skin (90 angle) Target Site: Muscle layer Common Sites: Deltoid, Vastus Lateralis, Goat Health How To: Injection And Drenching Hobby Farms